Stacy Ann Ferguson was born on March 27th, 1975, in Hacienda Heights, California. Her parents, Terri and Pat, encouraged Stacy and her younger sister Dana to pursue careers in the entertainment industry.

Stacy began her acting career as the voice of Sally on the Saturday morning cartoon The Charlie Brown and Snoopy Show in 1983, as well as on two TV specials: It's Flashbeagle, Charlie Brown (1984) and Snoopy's Getting Married, Charlie Brown (1985).

In 1984, following a commercial for Rice Krispies, she appeared in the pilot for the long-running musical television show, Kids Incorporated. The show, which also starred Jennifer Love Hewitt and the girl who would become goth pop princess Martika, was a hit with Saturday morning audiences and she sang backup on it until 1989.